Saw-setting machine



(NUModel.) W AMESBURY- SAW SETTING MACHINE.

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'isaseetion on line l l, Fig. 1.

UNrTED STATES PATENT vOFFICE..

i GEOneE w. AMEsBUnY, OE PHILADELPHIA, rENNsYLvANIA.

SAW-SETTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 257,201, dated May 2, 1852.v

Application filed December 17, 1881.

To all whom it may concern Be it known that I, GEORGE W. AMEsBURY, a citizen of the United States, resident ofthe city and county of Philadelphia, and Stateof- Pennsylvania, have invented'certain new and useful Improvements in Saw-Sets, of which the following is a specification, reference being had. to the annexed drawings, wherein;

Figure l is alplan of my invention. Fig. 2.

Fig. 3 isa section on line 2 2,' Fig. 1. Fig.4is a front eleva-v tion. Fig. 5 is a section, partly in elevation, on the line 3 3, Fig. l. Fig. 6 is an inside elevation ofthe movablejaw of the vise. Fig. 7 is aperspective of a partof the feeding devices. Fig. 8 is a detail crosssection of the same; and Fig. 9 is an elevation, partly sectional, of a detail modifica-tion.

Myinvention has relation to saw-sets, and is especially adapted for setting` the teeth of band-saws.

It has for its object to provide a saw-set of compact form, extreme durability, capable of being .easily operated, and which will efficiently set the teeth of saws with greater evenness or more uniform regularity and in less time than has heretofore been possible to do with the present form of saw-sets.

My invention accordingly consists of the combination, construction, and arrangement of parts, having reference particularlyT to the following features: rst, to the combination of an automatically opening and closing vise or clamp for holding the saw to be set, an automatic device for feeding such saw, and reciprocating setting-dies; second, to the provision of a clamping-viseV designed and adapted to close upon the saw and hold it in a xed position during the setting operation, and to open and release the saw from any binding or clamping action during the feeding operation 5` third, to the provision of a rotary shaft provided with mechanism for effecting the opening and closing of the clamping-vise, the feeding of the saw, and the reciprocation of the vsettingfdies; fourth, to the provision of va reciprocating bar carrying two independent setting-dies, designed and adapted to lbe adjusted to and from each other, as hereinafterexplained 5 and, fth, to certain details of construction hereinafter more fully set forth and claimed.

(No model.)

, represents the base or frame ofthe saw-set, and

is provided with a closed lower side or bottom, A, having an L-shaped slot, A2 A3, and also with a iiange, a, through which pass screws to lfasten Athe device to a bench or other suitable Iholder. b is a vertical elongated projectionor dug, formed intcgralwith said base, to ser-ve4 l`as the stationaryjaw ofavise or clamp, B, b being Athe movable jaw-thereof, and which is hinged orf pivoted to jaw b,at b2, hy a pintle, b3, provided with a milled head or ltnob,bt,so that said pintle-may readily lbe removed to effect disengagement of saidfjawsb andmli. when from any cause it is desirable to separate such parts. The jaw b is provided with an elongated central recess, b5, which receives a block, h6.

G is a screw-rod provided with milled head and jam-nut, and passes through a threaded opening, b, in jaw b', and enters recess b5. The end c of rod C is provided with an annular groove, c', so that when said end is passed into an opening in block bo and the pin bjinserted therein to pass across said groove c" ai of steel or other spring metal, and is slightly bowed, as illustrated, sothat when thejaws b` and b are closed together, as hereinafter set forth, said gage. will be ,attened out, and when such jaws are free to open the reaction of the spring-gage C will thereupon open said jaws. rlhe bow-shapedgageO also prevents the saw passing between it and the jaws lof the visev when the latter is opened.

D is a bearing-bar, secured at d to movable jaw b', and is provided at its upper end with a screw, d', whereby said end is adjusted to .and from the jaw b.. 1

' E is the driving-shaft, having bearings in baseAand cap` A,as shown. Upon said shaft is rigidlyseeured a wheel, F, mutilated at f f to form cams f f. VSaid wheel islocated upon IOO said shaft so as to be in line with bearing-bar D,againstwhich the cams f j impinge when said shaft is' rotated. Such impingement of the cams f f against bar D causes the latter to be moved to the left to eft'ect the closingof thejaw b to compress gage G and clamp or bind the saw placed between jaws b and b and hold it firmly in position during the setting operation. When the cams f f leave the bar D the latter and jaw b are free to move to the right, or away from jaw b, and such movement is accomplished by the reaction of spring-gage C', or the gage C may not be depended upon to open said jaws; but such movement may be accomplished by the reaction resulting from the compression of the saw-blade. In such case the gage C acts only to keep the blade in its vproper position within thevjaws of the vise.

G is a bar or frame resting upon the base A, and is held in position by fingers g and g, secured to said base by screws g2 on opposite sides of said bar, as shown. Said fingers form guides between which said bar slides. The bar G is formed with a yoke, G, through which shaft E passes, and H is a cam or eccentric secured to said shaft within said yoke, so that as said shaft is revolved the cam II will alternately contact with the sides g3 g4 of the yoke G to reciprocate bar G and the setting-dies I and I placed thereon. Said dies are each provided with slots i t', through which pass screws i i', whereby said dies are secured to bar G. When desired the dies may be adjusted to and from each other by loosening screws t" t', the amount ot such adjustment being conveniently ascertained by inspection of the scale i2 marked on bar G, as

illustrated. The dic I is cut away at one corner, as shown ait/3, and into the opening formed thereby'project the teeth of the saw K, placed in vise B, as shown in Fig. 1, said opening 3 being also provided for permitting the necessary reciprocating movement ofthe dies. As shaft E is turned the cam H reciprocates bar G and dies I and l', so that the setting-edges i4 4 of said dies alternately strike the saw-teeth on opposite sides of the saw to set the same.

l: is the feeding dog or pawl, pivotedat Z to arm Z2, and is provided with spring l, the tendency ot' which is to keep said dog in contact with the saw-teeth designed to be set. The arm Z2 is secured to or forms an integral part of a bar, L, pivoted at l4 in the front side, a', of base A, as shown. Upon such pintle-shaft Z4 is placed a spring or springs, Z5, the ends Z6 of which bear against side a4 of bar L and a ledge, a2, formed on frame A, as more plainly shown in Fig. 8. The action ot' springs l5 is such that thearm Z2 of bar L is thereby depressed to cause dog l to descend in order to get into position below the next succeeding tooth designed to be fed to the settingdies.

M is a wheel lxedly secured to shaft E, and upon the face ot' which are formed inclines or cams m m. From bar L projects a .finger or stud, L', and is situated in the path of movement of cams m m, so that when shaft E is revolved the cams m m strike or bear against stud L, moving it outwardly or away from the side a', as indicated by arrow in Fig. 5, rocking bar L on its pintle l4 to raise arm Z2 and dog l to position indicated by dotted lines l l, Fig. 5, and thereby causing said dog to feed the next succeeding saw-tooth to the dies.

Ois an adjusting-screw for limiting the amount of rocking ot' bar L, and thereby vary the extent of movement of arm Z2 and dog Zin feeding saws ot' di'erent sizes or lengths of teeth.

P is a driving-\vhcel, which, if desired, may have a peripheral groove, p, for a belt when it is designed to operate the saw-set by power or a handle, p, may be secured thereto formanual operation.

The operation is as follows: rlhe various parts being arranged for operation substantially as illustrated, with the various adjust- .Y

ments regulated to correspond with the thickness of the saw-blade and the length of the teeth, power is applied to shaft E, and the camwheels F M and cam or eccentric H simultaneously rotated; but these cams are so arranged on said shaft with respect to one another that the opening and closing of the vise, the reciprocation of the dies I and l', and the feeding of the saw take place successively or in uniform rotation. For instance, if the dies I and I be moving in the direction indicated by arrow y, Fig. l, the vise B is closed by reason of one of the cams f being in impingement withbar D, and the setting-edge i4 of die I is about to strike the saw to set a tooth. When such action has been effected the cam f has moved out of contact with bar D, whereupon the reaction ot'vcompressed spring-gage C or saw K then opens said vise. Meanwhile one of the cams on on wheel M has moved stud L to rock lever L and cause dog l to rise to feed the next successive saw-tooth into the line of movement of the dies, such feeding taking place the moment the vise B is opened, so that, the binding or clamping action thereof being removed from the saw, the latter is free to move when so actuated by the feeding-dog. As soon as such feeding is effected the vise B is again closed by impingement of the remaining cam f with bar D, and the bar G then making its return-stroke, the setting-face it ot' die I strikes said tooth so fed, but on the opposite side of the saw to that previously done by the die I. Hence every two teeth of the saw are re- Versely set by such movement of the dies. After die I completes such setting the vise opens. The next succeeding tooth is then fed or rai'sed,vthe vise again closes, and die I is moved to set such tooth, as above set forth. Hence duringy every revolution of the drivingshaft the vise opens and closes twice. Two

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IOS

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teeth of the saw are fed to and are reversely set by the reciprocating dies. All of such movements being automatically accomplished, no skill is required on the part of the operator for setting saws with my invention.

It will be noticed that the cap A' is so formed that it partially provides a bearing for both ends of the driving-shaft and for one end of the reciprocating bar G, and is held in position by screws A4 A4.

In Fig-.9 I haveshown a modification of the bearing-bar D, such modification being used where greater nicety and longer range of adjustment are designed to be given to said bar. In said figure the jaw bis shown as having an inclined lug, R, castthereon,which is formed with a dovetail slot, r, and recess r'.

R is a slide formed with inclined edge r2, upon which is formed a dovetail, r3, which passes into slot r of lug It. Said slide It is provided with an adjusting-screw, r4,having a grooved collar fitting in a slotted nger or bracket, r5,formed on or secured to lug R3. As said screw r4 is turned the slide It' is moved up or down, and during such movement its inclined side causes it to approach to or recede from the cam-wheel F.

The above-described saw-set can be used to set the teeth of band, circular, jig, hand, and other saws.

1. In a saw-set, the combination of a rotary shaft, a vise composed of a fixed and a movable jaw, the latter being provided with an adjustable bearing-bar acted on by a cam-wheel secured to said'shaft, and a feeding device controlled by mechanism substantially as shown and described, and operated by a camwheel,

also secured to said shaft, substantially as and for the purpose set forth.

2. In a saw-set, the combination, with a rotatin g shaft, of a vise composed of a fixed and a movablejaw, the latter being provided with an adjustable bearing-bar designed and adapted to be acted on by a cam-wheel on said shaft,

whereby said jaw is closed upon the fixed j aw,`

substantially as shown and described.

3. In a saw-set, the combination, with a revolving shaft, of a vise having one of its jaws provided with an adjustable bearing-bar, substantially as shown anddescribed, and designed and adapted to be acted on by a cam -wheel upon said shaft and an interposed plate or spring between such jaws,whereby when said shaft is rotated the jaws of the vise are closed upon and released from the saw, substantially as shown and described.

4. In a sawset, the combination of a base or frame to which is attached the fixed jaw of a vise, the movable jaw being pivoted to said fixed jaw and provided with a bearing-bar, which abuts against a camwheel secured to a rotary shaft, substantially as shown and described.

5. A saw-set provided with a rotary shaft, a vise having a fixed and a movable jaw, the

latterhaving a bearing plate or bar which abuts against a cam-wheel on said rotary shaft, in combination with an adjustable spring-gage interposed between the vise-jaws, substantially as and for the purpose set forth.

6. In a saw-set, the combination of a vise provided with an adjustable bearing-bar and an adjustable spring-gage, a cam-wheel, a rotary shaft, and setting and feeding devices, substantially as set forth.

7. In a saw-set, the combination of a vise provided with a bearingbar designed and adapted to be acted upon by a cam-wheel'on a rotary shaft, a die carrying or holding frame located in front of said vise and meshing with a cam or crank located upon said rotary shaft, whereby said die-carrying frame is caused to reciprocate in front of said vise, as Set forth.

8. In a saw-set, the combination of a vise, a rotary shaft, a cam fastened on said shaft and designed to close the movable jaw of the vise, areciprocatingdie-holding frameor bar, a feeddog located beneath said bar and in front of the vise, an oscillating bar, and an actuating cam-wheel for said bar secured to said shaft, substantially as shown and described.

9. In a saw-set, the combination of a rotary shaft, a saw holding or clamping device composed of a fixed and a movable member, the latter being designed to be closed by a cam- Wheel fastened on said shaft, and a reci procat ing frame or bar operated by a cam or crank secured to said shaft, said bar carrying adj ustable settingdies, substantially as shown and described.

10. In a saw-set, the combination of a vise, a bearing-bar thereforin engagement with a camwheel on a rotary shaft, a reciprocating dieholding bar operated by a crank or cam on said shaft and carrying adjustable setting-dies, and a feed-dog controlled by an oscillating bar operated by a cam on said shaft, substantially as shown and described.

11. In a. saw-set, a base or frame, A, a rotary shaft, E, a reciprocating bar, G, and a U-shaped cap, A', constructed to form bearings for both ends of said shaft and for one end of said bar, substantially as shown and described.

, 12. In a saw-set, the combination of a roA `tary shaft having a cam-wheel which. closes the movable jaw of a vise located parallel with said shaft, and a reciprocating die-holdin g bar arranged at right angles with said shaft and Ivise, and which is designed and adapted to be moved by a crank or cam secured on said shaft, substantially as shown and described.

13. In a saw-set, the combination of a vertically-arranged vise, its movable member being closed by a cam-wheel fastened to a rotary driving-shaft, a reciprocating die-holding lbar operated by a cam or crank, also secured to said shaft, and feeding mechanism constructed and arranged substantially as shown and de` scribed.

14. The combination of base A, vise B, hav

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ing fixedjaw b and movablejaw b', spring-gage C', provided with adjusting-screw, bearing plate D, shaft E, carrying cam-wheel F, substantially as shown and described.

1 5. In combination with a saw-holding vise or clamp and cam-Wheel, F, a bar, G, provided With a yoke, G', andl adjustable setting-dies I and I', shaft E, and eccentric or cani Il, snbstant-ially as shown and described.

16. In a machine for setting bandsaws, a' reciprocating bar carrying two setting-dies, which are rigidly secured thereto, and designed and adapted to be adjusted to and from one another by a sliding movement along or on said bar, lthe latter being operated by a cam or crank motion, substantially as shown and described.

17. In combination with a saw-holding vise or clamp and a setting device, the feed-dog l, bar Z2, frame L, pivoted at l to base A, stud L', cam-wheel M, rotating shaft E, substan- V tially as shown and described.

18. The combination ot base A, rotating shaft E, carrying cam M, stud L', secured t0 pivoted frame or bar L, and adjusting-screw O, substantially as shown and described.

19. In a saw-set, the combination of a rotary shaft, carrying a cam-wheel actuating an opening and closing vise or clamp, a reciprocating die-holding frame operated by a crank or cani on said shaft, and a feeding-dog pivoted to an oscillating bar carrying a retracting-spring, said bar being operatedby acam- Wheel secured to said shaft, substantially as shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this 12th day of,

December, 1881.

GEORGE W. AMESB URY.

Witnesses:

GHAs. F. VAN HORN, WILLIAM Monats. 

